News
- Animals
Tadpoles kill by supersuction
A high-speed video shows tiny African tadpoles that catch their prey in a manner unlike that used by any other frog larvae: by shooting out a tubular mouth for superfast suction.
- Health & Medicine
Immune protein may stall HIV
People who have HIV but don't progress to AIDS make extra perforin, a protein that helps kill infected cells.
- Planetary Science
Europa’s freckles
Reddish spots and shallow pits that pepper the surface of Jupiter's moon Europa may mark regions where warmer and less dense ice percolates to the surface.
- Planetary Science
Another moon for Uranus
Astronomers have confirmed the existence of the 21st moon known to be orbiting Uranus.
- Health & Medicine
Duct tape sticks it to warts
Treating a wart with a covering of duct tape seems to be more effective—and less painful—than removing the wart by freezing it with liquid nitrogen.
- Earth
Pesticides block male hormones
Some common pesticides can block the ability of androgens, male sex hormones, to trigger normal gene activities.
- Earth
Weed killer feminizes fish
The weed killer atrazine can turn normally hermaphroditic fish into females, a new study shows.
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- Materials Science
Worm’s teeth conceal odd mineral material
A worm's teeth contain a copper mineral that could serve as a model for new materials.
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Memory grows up in 1-year-olds
As children enter the second year of life, they exhibit a marked improvement in recalling simple events after a 4-month delay, perhaps reflecting the growth of memory-related brain areas.
- Astronomy
Milky Way black hole gets real
Tracing the path of a star orbiting near the center of our galaxy, astronomers have found the best evidence to date that a supermassive black hole lies at the Milky Way’s core.
- Astronomy
Cosmic rays from the solar system
Dust grains from the Kuiper belt, a storehouse of comets and other frozen bodies in the outer solar system, are the source of some of the lower energy cosmic rays that bombard Earth.
